First commit

OLD CONFIGS/nix_new/modules/nixos/desktop/audio.nix

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+# ~/nixos/modules/nixos/desktop/audio.nix
+#
+# Baseline audio stack:
+# - PipeWire as the audio server
+# - PulseAudio compatibility via pipewire-pulse
+# - ALSA compatibility (+ 32-bit ALSA for games/legacy)
+# - WirePlumber session manager
+# - RTKit for better realtime scheduling (often reduces crackling under load)
+#
+# IMPORTANT (NixOS option churn):
+# - On some nixpkgs revisions the old `hardware.pulseaudio` option was renamed to
+#   `services.pulseaudio`. We set the *services* one explicitly.
+# - Avoid `lib.mkForce` on pulseaudio enable/disable here because certain revisions
+#   have had type/override weirdness; use plain booleans instead.
+
+{ config, lib, pkgs, ... }:
+
+let
+  moduleName = "nixos-audio";
+in
+{
+  # ---- Disable the standalone PulseAudio daemon ----
+  #
+  # We want PipeWire to provide PulseAudio compatibility (pipewire-pulse),
+  # not a separate pulseaudio service.
+  services.pulseaudio.enable = false;
+
+  # ---- PipeWire ----
+  services.pipewire = {
+    enable = true;
+
+    # PulseAudio compatibility server (pipewire-pulse)
+    pulse.enable = true;
+
+    # ALSA compatibility (+ 32-bit for Steam/older apps)
+    alsa = {
+      enable = true;
+      support32Bit = true;
+    };
+
+    # Recommended policy/session manager
+    wireplumber.enable = true;
+
+    # Optional JACK compatibility (leave off unless you need it)
+    jack.enable = false;
+  };
+
+  # Realtime scheduling broker commonly used by PipeWire
+  security.rtkit.enable = true;
+
+  # Useful tooling
+  environment.systemPackages = with pkgs; [
+    pavucontrol
+    helvum
+    alsa-utils
+  ];
+
+  # Breadcrumb for debugging module load order
+  environment.etc."nixlog/loaded.${moduleName}".text = "loaded\n";
+}